Brush connection for dynamo-electric machines.



4 I c. P. MONTO. BRUSH CONNECTION FDR DYNAMO ELECTRIC MACHINES.

APPLICATION FILED MAR.'Z6. I9I7.

INVENTOR. CHARLES P. MUNTIJ A TTORNE Y Patented Feb. 5, 191.8.

BY v V UNITED STATES. mm oFFIc-E.

CHARLES r. MONTO, or CLEVELAND, 01110, nssrenoa, BY MESNE nssremmums, !I.'0

NATIONAL CARBON COMPANY, 0., A CORPORATION OENEW YORK.

Bnusn CONNECTION non D namo-ELECTRIC mdnmns.

To all whom it may concern:

Be it known that I, CHARLES P. l\ IoNTo, a citizen of the United States, reslding at Cleveland, in the county of Cuyahoga and 7 State of Ohio, have invented a certain new and useful Improvement in Brush Connections for Dynamo-Electric Machines, of

which the following is a full, clear, and

exact description.

This invention relates to flexible connections for brushes of dynamo electric machines and is particularly applicable to.

graphite-metal brushes.

Referring to the drawings: Figure 1 is a 'perspctiveview' of the flexible cable, to be-attached to the brush.

Fig. 2,is'an elevation of the metal strip before'it isbent aroundand secured to the cable shown in Fig. 1.

'Fig. 3 is a perspective view'l of a brush drilled to receive the flexible cable.

p Fig. 4 is a perspective 'view of thebrush with the attached cable. 1

. Fig. 5 is a section of the brush shown in Fig. 4 taken on the plane A-A before the head of the screw is removed.

Fig. 6 is a section of a modification.

Figs. 7 and 8. are an elevation and plan respectively, of the dowel pin shown in Fig. 6.

.of the cable 1 having the clamp 2 thereon .is next inserted in the hole 5 withthe slit 7 next to the hole 6 as in Fig. 4. A wood screw 8 (Fig. 5.) is then screwed into the hole ,6 until the point enters the slit 7 and Spreads the ends sufi'iciently to clamp the band outward against the walls of the hole co m cram patent my be obtained ior Specification 0! Letters I'atent. Application flied Karel; 26.1911. semi 110.- 157,347.

5. This spreading of the ends 3 also wedges .the strands more securely in the band.- ,On

, claim is:

I brush having account of the soft metallic state of the 1S unnecessary to ta the hole.

When the screw 8 as been full inserted it is cutofl flush withthe si e of the brush as shown in Fig. 4 and the connection is complete.

' While a wood screw is preferable onaccount of its taperedend, a pointed machine screw may be used either with or without first tapping out the hole.- A pin 9 may Patented Feb. '5, 101a.

brush, the screw cuts its own threads and it also be driven into the hole 6 to secure the cable in place asshown in Fig. 7. In such case it is preferable to knurl the pin 9 as shown in igs. 8 and 9, as this 'ves it a, better grip on the brush and cab e clamp, though a smooth pin may be used if desired.

" A brush connection made inaccordance with the foregoing disclosure is' very strong and of low resistance.

Having 1..A contact member consisting of a a brush having a cylindrical cavity and. a hole substantially at right angles thereto, a

stranded conductor having a split metal band around one end, said band being in said cavity and a screw in said hole projecting into the cable between the endsof the split band and wedgingthe said hand against the walls of the cavlty.

2. A contact member consisting of a a cylindrical cavity and a hole substantially at right angles thereto,a

stranded conductor having a split metal band around one end, the ends ofthe bandbeing serrated and turned inwardly into the cable, said band being in said cavit and a screw in said hole projecting into t e cable between the ends of the split band and wedging the said band against the walls of the cavity. I

In testimony whereof, I hereunto afiik my signature.

CHARLES P. MONTO.

five cents each,-by addressing the "Commissioner otl'atentl. "Washington, D. 0."

. -10 described my invention, .-what I i 

